Purpose: The dual goals of this tutorial are (a) to increase awareness and use of mediation and moderation models in cognitive-communication rehabilitation research by describing options, benefits, and attainable analytic approaches for researchers with limited resources and sample sizes and (b) to describe how these findings may be interpreted…

There is a need for intervention to support friendship for people living with aphasia. The purpose of this article is to describe a stakeholder engagement process that involved researchers, clinicians, people living with aphasia, and care partners to inform such intervention. Through reflection and firsthand accounts of non-university-based…

The complexity associated with how interventions result--or fail to result--in outcomes and how context matters is increasingly recognised. Logic models provide an important tool for handling complexity, with contrasting uses in programme evaluation and evidence synthesis. To reconcile these, we developed an approach that combines the strengths of…

This article is predicated on the idea that, by interacting with differences of various kinds, researchers in special education can obtain conclusions that are more nuanced, sophisticated, richer, and, hence, better than when they would have ignored such differences. Based on the application of existing research guidelines to 6 recent exemplars of…

Purpose: This article reflects on a diversity and equity view of disability and offers a perspective on the representation of disability within speech and hearing sciences in terms of membership, research, and pedagogy. Conclusions: All areas of representation can be improved to support American Speech-Language-Hearing Association's strategic…

Design-based methods have recently been developed as a way to analyze data from impact evaluations of interventions, programs, and policies. The impact estimators are derived using the building blocks of experimental designs with minimal assumptions, and have good statistical properties. The methods apply to randomized controlled trials (RCTs) and…

A new design-based theory has recently been developed to estimate impacts for randomized controlled trials (RCTs) and basic quasi-experimental designs (QEDs) for a wide range of designs used in social policy research (Imbens & Rubin, 2015; Schochet, 2016). These methods use the potential outcomes framework and known features of study designs…

Design-based methods have recently been developed as a way to analyze data from impact evaluations of interventions, programs, and policies (Imbens and Rubin, 2015; Schochet, 2015, 2016). The estimators are derived using the building blocks of experimental designs with minimal assumptions, and are unbiased and normally distributed in large samples…

Individuals with sickle cell disease experience a life-time of morbidity as well as a decreased lifespan. Since African Americans are disproportionately affected by the disease, sickle cell contributes to growing health disparities within this population. Thus, addressing issues related to the disease presents an increased need for health…

To better appreciate the contribution of the "paradigm of complexity" in Educational sciences, this paper proposes a framework discussing its cultural and historical roots. First, it focuses on Giambattista Vico's (1668-1744) critique of René Descartes' method (1637), contrasting Cartesian's principles (evidence, disjunction, linear…

Multisite trials, in which individuals are randomly assigned to alternative treatment arms within sites, offer an excellent opportunity to estimate the cross-site average effect of treatment assignment (intent to treat or ITT) "and" the amount by which this impact varies across sites. Although both of these statistics are substantively…

Single-case or single-subject experimental designs (SSED) are used to evaluate the effect of one or more treatments on a single case. Although SSED studies are growing in popularity, the results are in theory case-specific. One systematic and statistical approach for combining single-case data within and across studies is multilevel modeling. The…

Rape prevention programmers and researchers have long struggled to select the most appropriate theoretical models to frame their work. Questions abound regarding appropriate standards of evidence for success of program interventions. The present article provides an alternative point of view to the one put forward by seven staff members from the…

Debate is occurring about which result interpretation aides focused on examining the experimental effect should be used in single-subject experimental research. In this study, we examined seven nonoverlap methods and compared results using each method to judgments of two visual analysts. The data sources for the present study were 36 studies…

Background: One of the reasons for the slow and uncertain translation of research into practice is likely due to the emphasis in science on explanatory models and efficacy designs rather than more pragmatic approaches. Methods: Following a brief definition of what constitutes a pragmatic approach, I provide examples of pragmatic methods, measures,…